html { overflow-x: hidden; }

body {
  font-size: 16px;
  text-align: center;
  margin: 0;
  padding: 0 4px;
  box-sizing: border-box;
  overflow-x: hidden;
  background-color: var(--bg);
  color: var(--fg);
  font-family: Verdana, Tahoma, Helvetica, Arial;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }
img { border: 0; }

#page {
  text-align: left;
  width: 100%;
  max-width: var(--page-width);
  margin: 0 auto;
  box-sizing: border-box;
}

.mtoimg {
  display: inline-block;
  width: 300px;
  height: 105px;
  background-color: currentColor;
  -webkit-mask: var(--icon-url) no-repeat center / contain;
  mask: var(--icon-url) no-repeat center / contain;
}
a:has(> .mtoimg) { display: inline-block; line-height: 0; }

.seg {
  display: inline-flex;
  border: 1px solid currentColor;
  border-radius: 6px;
  overflow: hidden;
}
.seg > a {
  display: inline-block;
  padding: 5px 12px;
  border-left: 1px solid currentColor;
}
.seg > a:first-child { border-left: 0; }
.seg > .seg_active { background: rgba(128,128,128,0.2); font-weight: 600; }
.seg > a:hover { text-decoration: none; }
.seg > a[href]:hover { background: rgba(128,128,128,0.12); }

.lang_dropdown, .auth_dropdown { position: relative; display: inline-flex; }
.lang_dropdown summary, .auth_dropdown summary {
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.lang_dropdown summary::-webkit-details-marker,
.auth_dropdown summary::-webkit-details-marker { display: none; }
.lang_dropdown summary::marker, .auth_dropdown summary::marker { content: ""; }
.lang_dropdown summary::after, .auth_dropdown summary::after {
  content: "";
  width: 12px;
  height: 12px;
  background-color: currentColor;
  -webkit-mask: var(--lang-arrow-url) no-repeat center / contain;
  mask: var(--lang-arrow-url) no-repeat center / contain;
  transition: transform 0.2s;
}
.lang_dropdown[open] summary::after, .auth_dropdown[open] summary::after {
  transform: rotate(180deg);
}
.lang_dropdown_menu, .auth_dropdown_menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: var(--bg);
  border: 1px solid rgba(128,128,128,0.3);
  border-radius: 6px;
  overflow: hidden;
  min-width: 100%;
  z-index: 10;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.lang_dropdown_menu a, .auth_dropdown_menu a {
  display: block;
  padding: 6px 12px;
  text-decoration: none;
  white-space: nowrap;
}
.lang_dropdown_menu a:hover, .auth_dropdown_menu a:hover {
  background: rgba(128,128,128,0.12);
  text-decoration: none;
}
.lang_dropdown_menu a[aria-current="true"] { font-weight: 600; }

.icon_button,
.lang_dropdown summary,
.auth_dropdown summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-family: sans-serif;
  font-size: 16px;
  font-weight: 700;
  line-height: 22px;
  color: inherit;
  background: #f0f0ff;
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid #d0d0e0;
  border-radius: 6px;
}
.icon_button:hover,
.lang_dropdown summary:hover,
.auth_dropdown summary:hover { background: #e0e0ff; text-decoration: none; }
body.dark .icon_button,
body.dark .lang_dropdown summary,
body.dark .auth_dropdown summary { background: #20202c; }
body.dark .icon_button:hover,
body.dark .lang_dropdown summary:hover,
body.dark .auth_dropdown summary:hover { background: #30303c; }
.icon_button_glyph {
  width: 22px;
  height: 22px;
  background-color: currentColor;
  -webkit-mask: var(--icon-url) no-repeat center / contain;
  mask: var(--icon-url) no-repeat center / contain;
}
.theme_toggle {
  box-sizing: border-box;
  flex: none;
  padding: 0;
  width: 44px;
  height: 44px;
  cursor: pointer;
}
.theme_toggle .icon_button_glyph {
  flex: 1;
  align-self: stretch;
  width: auto;
  height: auto;
  --icon-url: var(--theme-icon-dark-url);
}
body.dark .theme_toggle .icon_button_glyph { --icon-url: var(--theme-icon-light-url); }
.icon_button_row { display: flex; flex-wrap: wrap; gap: 8px; }

.login_label_short { display: none; }
@media (max-width: 520px) {
  .login_label_full { display: none; }
  .login_label_short { display: inline; }
}